Attachment for fast-warp knitting machines



J. C. MARKMAN. ATTACHMENT FOR FAST WARP KNITTING MACHINES. APPLICATION FILED NOV. 10, 1920. RENEWED APR. 7, 1922.

Patented Oct. 10, 1922.

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WITN ESSES ATTO R N EY J. C. MARKMAN. ATTACHMENT FOR FAST WARP KNITTING M ACHINES.

APPLICATION FILED NOV- 10, 1920- RENEWED AP 1,431,828.

Patented Oct. 10, 1922.

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INVENTOR,

WITNESSES ATTORN EY Patented Oct. 10, 1922.

UNITED STATES raters rarest cri ics.

J' ACOB C. MARKMAN, 0J3 AMSTERDAM, NEW YORK, ASSIGNOR To FULTON COUNTY MACHINE AND SUPPLY COMPANY, OF GLOVERSVILLE, NEW YORK, A CORPORA- TION OF NEW YORK.

ATTACHMENT FOR FAST-VTARP KNITTING MACHINES.

Application filed November 10, 1920, Serial No. 423,049. Renewed April 7, 1922. Serial No. 550,509.

1 0 all 10110712. it may concern Be'it known that 1, Jason C. Mauritian, a citizen of the United. States, residing at Amsterdam, in the county of Montgomery and State of New York, have invented a new and useful Attachment for Fastarp Knitting Machines, of which the following is a specification.

This inventionhas reference to knitting machines of the kind used in making silk and cotton jersey cloth for gloves, and also in making silk and cotton nets and which may be used for making cotton atlas cloth afterward finished to imitate chamois, and then called chamoisette.

Such knitting machines are known in the practical art, by "arious names, such as fast warp, traverse warp and flat bar knittinp' machines.

7 n machines used for the purposes named, difficulty hasbeen found in properly constructing the pattern wheels, because, as heretofore made, the pattern arm is actuated by the pattern wheel in such a manner that there is either a lead or a lag between mitted to the pattern arm by way of the.

customary connections.

. In accordance with the invention, push rods are employed having a path or reciprocation always radial to the pattern wheel. and then the motion is translated into another motion perpendicular to the direction of travel. of the push rod. Such change of motion has heretofore been proposed, but at the point of translation of the motion, curvilinear motion has been included. thus introducing certain difficulties making it necessary to correct the pattern wheels in a manner necessitating hand work thereon. and introducing other errors. It is the purpose of the invention to provide a translating motion whichwill eliminate the necessity of hand work and attendant errors so that the mechanism employed maybe properly calculated as to its proportions and accu rately machined. whereby all liability of acceleration and lag is done away with, and the quality of the work performed by the machine materially improved. For this purpose the translating motion occurs through rack and pinion connections at right angles to each other with the rack movements straight and constant in speed throughout their travel, instead of the movements being through the intermediary of rock levers and in curved paths.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming part of this specification, with the understanding, however, that the invention is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings:

Fig. 1 is a side elevation of the part of the machine containing pattern wheels and associated mechanism.

Fig. 2 is an end elevation. with some parts in section of the structure of Fig. l as seen from the left-hand end thereof.

F is a plan view of the structure shown in Fig. 1.

Fig. is a section on the line -l-- 1 of Fig. 2. I

Fig. 5 is a section on the line 5-5 of Fig. 4;. i

Fig. 6 is a perspective view of one of the rack and pinion structures.

Referring to the drawings, there is shown in Fig. 1 a portion 1 of the main frame of the knitting machine to which the invention is applied. Fast to the frame 1 are spaced brackets 52 carrying a shaft3 on which there is secured a toothed wheel 4.- engaged by flanges or wings 5 on a wing wheel (3 which is mounted on a drive shaft 7 receiving motion from a suitable source of power, not shown. and assumed. to be supported on the main frame of the machine in a manner also not shown, since the shaft and wind wheel form no part of the invention. The purpose of the wing wheel 6 and toothed wheel 4 is to impart a rotary step-by-step movement to the shaft 3 withthc steps relatively short. a commercial form of the invention requiring say 96 impulses of the a drawings. The pattern wheels are in eccentric relation to the axis of rotation of the shaft 3, and each wheel has a continuous series of teeth. 10 on its periphery.

Engaging each pattern wheel 8 and 9, is a vertical rack bar 11 individual to the respective pattern wheel and provided at its lower end with a roller 12 riding on the teeth 10 so as to be actuated by said teeth as the pattern wheel rotates and so that the rack bar besides having impulses imparted to it corresponding to the teeth 10, also has a slower and more extended move ment imparted to it by the eccentric or cam form of the pattern wheel. Each rack bar 11 has a series of gear teeth 13 on one edge meshing with one end of an elongated gear pinion 14 long enough to engage a series of gear teeth 15 on another rack bar 16 capable of traveling alongside of and perpendicular to the direction of travel of the rack bar 11. The teeth on the rack bars and on the pinion 1 1 are so proportioned that the rack bars move simultaneously in rightangular relation, the movement of the rack bar 11 being vertical and the movement of the rack bar 16being horizontal in the installed position of the parts. In order to protect and guide the rack bars and also protect and support the pinion 14:, these parts are inclosed in a housing 1'? of sufii cient extent to inclose the rack bars and gears belonging to both pattern wheels. The housing 17 is a stationary housing which may be fixedly attached by a bracket 18 to one of the frames 2.

Each horizontal rack bar 16 is made fast to an adjustable guide bar 19 of'the machine such adjusting bars having adjusting screws 20 whereby their effective length may be established. The guide bars 19 are shown in Fig. 3 as being each connected to one end of an extension spring 21.

lVhen the machine is in operation, the shaft 7 is driven by suitable power, rotating the wing wheel 6, and thereby imparting step -bystep rotary movement to the gear wheel 4:, and through the latter to the shaft 3. The two pattern wheels participate in the rotary movement of the shaft 3 and radial impulses are imparted to the rack bars 1.1 in alternation. At the same time a slower reciprocating movement is imparted to the rack bars 11 in alternation because of the cam form of the pattern wheels. The reciprocatory movement of each bar 11 is translated into an oscillatory movement of the respective pinion 1 1 which latter, being in mesh with the companion rack bar 16, causes the latter to correspondingly recipro catc. The gear wheel 14, being in mesh with the rack bar 16, causes the latter to reciprocate in unison with the rack bar 11. In one direction of movement of the rack bar 16, the correspomling spring 21 is extended motion being imparted to parts of the machine notshown and at the time of the extension of the spring 21, the rack bar 11 is being forced upwardly by the cam formation ofthe respective pattern wheel. As

the pattern wheel 8 or 9 continues its rotary movement, the low portion of the pattern wheel is reached and the extended the pattern wheel is thus known, wherefore, the pattern wheel may be accurately machined or milled ready for use, with the result that the machine is thoroughly and accurately equipped and produces a oetter quality of fabric than has heretofore been attained. a

' What is-clainied isi 1 1. In a knitting machine of the type de scribed, the combination with the guide bars of the machine, of eccentrically arranged pattern wheels, radially movable rack bars engaged by the pattern wheels, a pinion for each rack bar, other rack bars meshing with the pinions and movable in paths at right angles tothe first-named rack bars, and connections between the second-named rack bars and the guide bars. 7

2. In a knitting machine or the type described, the combination with the guide bars of the machine of eccentrically arranged pattern wheels and connections between the pattern wheels and the guide bars for translating the eccentric'movement of the pattern wheels into straight linereciprocatory movements of the guide bars, the translating movements being in angularly related right lines. p

3. In a knitting machine of the type described, the combination with the guidebars off the machine movable in straight lines, of

eccentric-ally arranged pattern wheels, rack bars movable in right lines by and radial to the pattern wheels and motion-translating mechanism between the rack bars and the guide bars comprising pinions engaged by the rack bars and other rack bars engaged by the pinions and movable by-the latter in directions at right angles tothe movement of the first-named rack bars, whereby the transitory movements between the pattern wheels and the guide bars are. straight and at right ai'igles to each other.

i. ln a knitting Il'lzH'llllK. o'i the type described, the coinbiimtion with the guide bars of the machine, movable in straight lines, of

eccentrically arranged pattern wheels, rack bars movable in right lines by and radial to the pattern wheels, and motion-translating mechanism between the rack bars and the guide bars comprising pinions engaged by the rack bars and other rack bars engaged by the pinions and movable by the latter in directions at right angles to the movement of the first-named rack bars, whereby the transitory movements between the pattern wheels and the guide bars are straight and at right angles to each other, the rack bars crossing each other at right angles side by side and each pinion being elongated so that its teeth will engage both rack bars simultaneously.

5. In a knitting machine of the type described, the combination with the guide bars of the machine movable in straight lines, of eccentrically arranged pattern wheels, rack bars movable in right lines by and radial to the pattern wheels, and motion-translating mechanism between the rack bars and the guide bars comprising pinions engaged by the rack bars and other rack bars engaged by the pinions and movable by the firstnamed rack bars, whereby the transitory movements between the pattern wheels and the guide bars are straight and at right angles to each other, the rack bars crossing each other at right angles side by side and each pinion being elongated so that its teeth will engage both rack bars simultaneously, and a housing inclosing the pinions and also inclosing the rack bars where crossing, and serving as a guide and support for the rack bars.

6. In a knitting machine of the type described, the combination With the guide bars of the machine, with each guide bar provided with a spring constraining it to move in one direction, of eccentrically arranged pattern wheels, a rack bar for each pattern wheel movable in a direction radial to the pattern wheel, another rack bar connected to each guide bar and movable therewith at right angles and adjacent to the first-named rack bar, and an elongated pinion simultaneously engagin the teeth on both rack bars, whereby the rack bars are constrained to move together to extend the spring in one direction of movement and to respond to the spring in the opposite direction of movement.

In testimony, that I claim the foregoing as my own, I have hereto affixed my signature.

JACOB G. MAR-KMAN. 

